What is gnosis in the brain?

Could you please elaborate on the concept of gnosis within the context of the brain? I'm intrigued to understand what it encompasses and how it relates to our cognitive processes. Is gnosis a specific function or a broader term that encompasses various mental faculties? Additionally, what role does it play in decision-making, problem-solving, and overall mental well-being? I'm eager to gain a deeper understanding of this intriguing concept.